The Chi-square test is a non-parametric statistical test used for bivariate analysis when both variables are categorical. It examines the association or independence between two categorical variables by comparing the observed and expected frequencies in a contingency table.
Fig. shows repeated glucose measurement for a single sample. Choose the correct findings from the following statements.
LIST:
A. Instrument A is precise and unbiased.
B. Instrument B is precise and biased.
C. Instrument B has a positive bias.
D. Instrument C has only positive bias.
E. Instrument C is unbiased.